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Scanning electron microscopy study of styrene-divinylbenzene copolymers
European Polymer Journal, 1992Abstract Styrene divinylbenzene copolymers have been synthesized by suspension polymerization in the presence of toluene and heptane as diluents for the monomers. The effects of toluene/heptane ratio, degree of dilution of the monomers and divinylbenzene(DVB) content on the surface formation of the copolymer beads were examined by scanning electron ...
F.M.B. Coutinho, D. Rabelo
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On the structure of macroreticular styrene‐divinylbenzene copolymers
Die Angewandte Makromolekulare Chemie, 1988AbstractThe influence of the removal of various diluents, pore forming agents from the porous styrene‐ethylstyrene‐acrylonitrile‐divinylbenzene copolymers on the structure of the matrix was investigated by several methods. The most advantageous pathway to preserve the initial structural edifice of the porous networks performed in the presence of ...
Ignat Poinescu +3 more
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Porosity variation and swelling of styrene-divinylbenzene copolymers
Polymer Bulletin, 1980The porosity measured for two series of diluent-modified styrene (S) — divinylbenzene (DVB) copolymers (10 and 20 wt.-% of DVB) was found to depend on sample pre-treatment. A correlation between the volume fraction of the polymer in the swollen gel and the volume fraction of octane used as diluent has been established assuming the isotropic swelling of
Henryk Galina, Bo?ena N. Kolarz
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Adsorption of mercury(II) on macroreticular styrene—divinylbenzene copolymer beads
Talanta, 1979The adsorption characteristics of mercury(II) on several kinds of styrene-divinylbenzene copolymer beads having different surface properties were studied. It was found that the polymer beads selectively adsorbed mercury(II) from solutions over a wide range of pH with high efficiency.
A, Sugii, N, Ogawa, H, Imamura
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Chemical modification of styrene-divinylbenzene copolymers by dialkyl phosphites
Polymer, 1986Abstract Chloromethylated styrene-divinylbenzene copolymers were treated with dialkyl phosphites to obtain cation exchangers with phosphorus-containing acid groups. The gel and macroporous styrene-divinylbenzene (St-DVB) copolymers of Wofatit type were used. The influence of the phosphite (R=CH 3 , C 2 H 5 ) as well as of the copolymer structure (gel,
Romuald Bogoczek, Joanna Surowiec
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AN OVERVIEW OF HYDROPHOBIC CATALYST OVER STYRENE-DIVINYLBENZENE COPOLYMER
Chemical Engineering Communications, 2012Recently developed catalytic processes with hydrophobic catalysts supported over styrene-divinylbenzene copolymer (SDB) were reviewed. Applications of such catalytic processes in commercial chemicals production and environmental management were examined in great detail.
Baohe Wang, Weili Ran
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Styrene — divinylbenzene copolymers, IV. Porosity changes during chloromethylation
Die Angewandte Makromolekulare Chemie, 1986AbstractThe change in the porosity of styrene‐divinylbenzene (S‐DVB) copolymers during the chloromethylation reaction was investigated using apparent densities and equilibrium swelling in toluene. Maximum porosity of S‐DVB copolymers does not change appreciably with the chloromethylation reaction.
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Cure characterization of soybean oil—Styrene—Divinylbenzene thermosetting copolymers
Journal of Applied Polymer Science, 2009AbstractBio‐based resins are an alternative to petroleum‐based resins in the production of fiber‐reinforced polymers (FRPs) by processes such as pultrusion. A detailed understanding of the cure behavior of the resin is essential to determine the process variables for production of FRPs.
Prashanth Badrinarayanan +3 more
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Macroreticular resins. III. Formation of macroreticular styrene–divinylbenzene copolymers
Journal of Polymer Science Part A-1: Polymer Chemistry, 1968AbstractExperimental evidence is presented that describes the mechanism of formation of macroreticular styrene–divinylbenzene copolymers in which phase separation occurs during a suspension polymerization. The mode of formation of the macroreticular structure is described as a three‐stage process in which each droplet of the organic phase behaves as an
Kenneth A. Kun, Robert Kunin
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Neutral Styrene Divinylbenzene Copolymers for Adsorption of Toxins in Liver Failure
Biomacromolecules, 2008In artificial extracorporeal liver support systems, albumin-bound toxins such as bilirubin, bile acids, or aromatic amino acids are removed by adsorption to polymer beads. To overcome the potential weaknesses of anion exchange polymers currently used in liver support, namely, binding of heparin and activation of coagulation, we prepared two series of ...
Viktoria, Weber +5 more
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